Official document 5702/DON-QLDN1 Issued by the Dong Nai Provincial Tax Department on April 15, 2026, this document provides important guidance for businesses investing in expansion. In the context of increasingly stringent regulations on corporate income tax incentives, this content helps resolve difficulties in determining the tax exemption and reduction period for additional income.
Understanding Circular 5702/DON-QLDN1 helps accountants declare taxes correctly according to the law and optimize tax expenses appropriately. The document clarifies the link between the 2020 Investment Law, Circular 78/2014/TT-BTC and Decree 320/2025/ND-CP, creating a solid foundation for corporate income tax settlement in industrial zones. We invite readers to follow the analysis from MAN experts below.
Legal basis for implementing Official Letter 5702/DON-QLDN1
To properly understand the guidance in Official Letter 5702/DON-QLDN1, businesses need to directly compare it with the current legal framework. Coordination between specialized laws is a key factor in determining the accurate rights of investors.
Below is a summary table of legal grounds directly cited in Official Letter 5702/DON-QLDN1:
| STT | Legal documents | Key relevant content |
| 1 | Investment Law 2020 | Clause 5 of Article 3 stipulates the provisions regarding expansion investment projects. |
| 2 | Circular 78/2014/TT-BTC | Point a, Clause 6, Article 18 and Clause 2, Article 18 regarding preferential conditions. |
| 3 | Circular 96/2015/TT-BTC | Clause 4 of Article 10 amends the conditions for expanded investment incentives. |
| 4 | Circular 151/2014/TT-BTC | Article 6 provides guidance on preferential treatment regarding the duration of corporate income tax exemptions and reductions. |
| 5 | Decree 320/2025/ND-CP | Article 23 stipulates the conditions for applying corporate income tax incentives. |
According to Official Letter 5702/DON-QLDN1, correctly identifying the type of project is the first and most important step in benefiting from preferential financial policies.
Conditions for enjoying corporate income tax incentives according to Official Letter 5702/DON-QLDN1
Official document 5702/DON-QLDN1 clearly states that, when granted an amended Investment Registration Certificate, the project must satisfy two groups of conditions. Firstly, it must meet the definition of an expanded investment project according to the 2020 Investment Law, and secondly, it must meet the criteria in Circular 78/2014/TT-BTC.
The application of Circular 5702/DON-QLDN1 requires businesses to prove the additional income generated from expansion investments. If the figures cannot be clearly separated, businesses risk having their preferential treatment denied during tax audits.
How to determine the tax exemption period in Official Letter 5702/DON-QLDN1
A key point in Official Letter 5702/DON-QLDN1 is the affirmation regarding the duration of preferential treatment. Accordingly, income from expanded investments is entitled to the same tax exemption and reduction period as new investment projects in the city's industrial zones, as stipulated by law.
According to Official Letter 5702/DON-QLDN1, if a new project is exempt from tax for 2 years and receives a reduction of 50% for the following 4 years, then the expansion project will also be subject to the same regulations. This creates a strong incentive for companies to reinvest in machinery and technology in the province.
Regulations on separate accounting of income according to Official Letter 5702/DON-QLDN1
During implementation, Circular 5702/DON-QLDN1 requires businesses to have a strict accounting system. If a business carries out multiple production and business activities, it is mandatory to separately calculate the income eligible for preferential treatment. corporate income tax for declaration.
According to Official Letter 5702/DON-QLDN1, separate declarations must include both preferential tax rates and tax exemptions/reductions as stipulated in Clause 2, Article 18 of Circular 78/2014/TT-BTC. This aims to prevent the transfer of profits between revenue streams to exploit preferential policies.
Investment incentive target: Research and Development (R&D) Center
Besides production, Official Letter 5702/DON-QLDN1 is placed in the context of new regulations on eligible beneficiaries of incentives. According to Clause 11, Article 19 of Decree 96/2026/ND-CP, projects establishing research and development centers are officially eligible for incentives.
In addition, this Decree also extends incentives to other entities such as product distribution chains of small and medium-sized enterprises. Incubators and co-working spaces supporting innovative startups also benefit from similar incentive policies.
Principles for selecting the highest level of incentives as outlined in Official Letter 5702/DON-QLDN1
A golden rule reinforced by Circular 5702/DON-QLDN1 and Decree 96/2026/ND-CP is the investor's right to choose. When a project meets multiple conditions for different levels of incentives, the investor has the right to apply the highest level.
Official document 5702/DON-QLDN1 reminds businesses to carefully assess existing tax scenarios. Determining eligibility for preferential treatment under Article 23 of Decree 320/2025/ND-CP is a crucial legal responsibility of the businesses themselves to protect their rights.
The importance of accounting systems and invoices.
Official document 5702/DON-QLDN1 emphasizes that corporate income tax incentives are only available to businesses that fully comply with accounting and invoicing regulations and file tax returns. This is a prerequisite for any tax exemption or reduction period to be legally effective.
Based on Official Letter 5702/DON-QLDN1, any errors in invoice documents can lead to the rejection of preferential treatment for businesses. This causes serious financial and cash flow damage, therefore internal control needs to be emphasized.
Risks of not fully understanding Official Document 5702/DON-QLDN1
Misinterpreting Circular 5702/DON-QLDN1 and applying the wrong start date for tax exemptions will lead to significant discrepancies in final settlement reports. Businesses need to pay particular attention to the timelines when receiving amended Investment Registration Certificates.
Using Official Letter 5702/DON-QLDN1 as a guide helps businesses confidently explain their data to relevant authorities. Failure to update new regulations such as Decree 320/2025/ND-CP can lead to severe administrative penalties for tax violations.
Analysis of investment expansion criteria in Official Letter 5702/DON-QLDN1
Below are the criteria for identifying expansion investment projects as guided by Official Letter 5702/DON-QLDN1 (referencing Circular 78/2014/TT-BTC):
- Capital: Increase the original cost of fixed assets by a minimum of 10 billion to 20 billion VND, depending on the location.
- Proportion: The increase in the original cost of the asset must reach at least 20% compared to the total original cost before investment.
- Power: The completed design capacity has increased by at least 201 TP3T compared to before the investment.
Businesses that meet just one of the above criteria will be entitled to the benefits as stipulated in Official Letter 5702/DON-QLDN1.
Conclude
Official Document 5702/DON-QLDN1 is a legal tool that helps businesses transparently protect their tax rights when expanding production. Applying the guidelines from Official Document 5702/DON-QLDN1 correctly ensures compliance and protects businesses from future tax audit risks.
At MAN – Master Accountant Network, we are ready to assist you in handling complex tasks arising from Official Letter 5702/DON-QLDN1. With our auditing and experience... tax consulting, MAN will help you prepare accurate tax reports and optimize the benefits from your investment projects. Let MAN accompany you on your path to sustainable development and legal compliance.
Service contact information at MAN – Master Accountant Network
- Address: No. 19A, Street 43, Tan Thuan Ward, Ho Chi Minh City
- Mobile/Zalo: 0903 963 163 – 0903 428 622
- Email: man@man.net.vn
Content production by: Mr. Le Hoang Tuyen – Founder & CEO MAN – Master Accountant Network, Vietnamese CPA Auditor with over 30 years of experience in Accounting, Auditing and Financial Consulting.
Frequently Asked Questions about Official Document 5702/DON-QLDN1
Yes. According to Decree 96/2026/ND-CP, projects to establish research and development centers are key projects eligible for investment incentives.
Based on Article 20 of Decree 96/2026/ND-CP, investors have the full right to proactively choose the highest level of incentives to apply to their projects.
Businesses must separately account for income from expansion projects. If this separation is not possible, it will be calculated based on the ratio of the value of the newly invested assets to the total value of existing assets. Does the R&D center project qualify for investment incentives?
What happens if multiple incentive levels are met?
How is income calculated separately when implementing Official Letter 5702/DON-QLDN1?
